Tobacco pipe



C. E. MCDONALD TOBACCO PIPE, Filed sept. 1, 1954 Nov. 12,1935.

Patented Nov. 12, 1935 TDBACCO PIPE Charles E. McDonald, Butte, Mont., assignor of one-half to M ichael Houghton, Butte, Mont.

Application September 1, 1934, Serial No. 742,466

3 Claims. (Cl. 131-12) The present invention relates to improvements in tobacco pipes and it has for its primary object the provision of a construction by means f which nicotine, tobacco particles and other deleterious products may be prevented from reaching the mouth of the smoker.

A further objective is to provide an arrangement 0f parts such that the smoke from the tobacco is required to pass through a tortuous path from the combustion or tobacco chamber and through a filter chamber before reaching the stem of the pipe and in so doing said smoke is superheated to deprive it of much of its moisture and nicotine and is more or less avored to give '15 it the desired aroma and tobacco taste.

Another object in view is to provide a construction of parts which may be readily assembled into unit form and disassembled to permit of cleansing and replacement, particularly of the 20 lter material.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawing- Fig. 1 is a longitudinal sectional View of a pipe constructed in accordance with my invention;

Fig. 2 is a horizontal section taken about on the plane indicated by the line 2 2 of Fig. 1; Fig. 3 is a sectional view of the cap member for the pipe body;

Fig. 4 is a sectional view of the tobacco bowl or container;

Fig. 5 is a sectional View of the bottom closure .cap for the tobacco bowl;

Fig. 6 is a top plan view of a modied form of tobacco bowl; and

Fig. 7 is a view partly in elevationv and partly in section of the bowl shown in Fig. 6, disposed in the pipe body in operative position.

Like reference characters designate corresponding parts in the several figures of the drawing.

Referring to the drawing and specifically describing the invention, I designates the hollow body portion 0f the pipe which outwardly is of the usual form and provided with the conventional stem 2. Within the body is mounted the tobacco container or bowl 3 of a substantially smaller diameter than the body aforesaid so as to leave an annular space d which forms the filtering chamber, as hereinbefore referred to. This tobacco bowl has formed therein an annular series of vertical bores or passages 5 which communicate at their lower ends with the cavity 6 beneath the bowl which cavity is closed by means of a cap or plate "I, shown clearly in Fig. 5 to be concave in form and provided with an annular flange 8 threaded exteriorly to screw into the bottom of the tobacco bowl 3.

The closure plate I if further formed with a pe- 5 ripheral flange extension 9 which has a diameter corresponding to the interior diameter of the body I, so as to act as a closure for the chamber 4 at its bottom, except for the small openings II) arranged around the same. This flange 5 l0 centers the tobacco bowl 3 within the body, supports the filtering means and the bowl and acts to prevent any particles carried by the smoke or which tend to move through the chamber l under the influence of the suction, from enter- 15 ing the stem passage. For the purpose of supporting the bowl 3 in spaced relation to the bottom of the body, the plate 'I is formed with a protuberance 'I' to coaet therewith.

The bowl 3 is held in place within the body I by 20 the cap member tI, the peripheral flange I2 of which is threaded to coact with the top of the body. Said cap is formed with a central opening coinciding with the interior diameter of the bowl and preferably on its under surface with a small 25 annular groove I3 to receive and seat the cooperating rib Ici. on the rim of the bowl, thereby effectively sealing the annular chamber i?. at its top.

The bowl 3 has an opening I5 through its bot- 30 tom at the center which establishes communication with the cavity and the bottom of the body is provided with a plurality of openings I6 to establish communication with the passage through the stem. 35

The bowl 3 is further cut away at its top sufciently to open the passages 5 into the annular chamber 4 when the cap member EIY is inV place, as clearly shown in Fig. l which also clearly shows the manner in which the several parts described 40 are assembled within the chamber of the body I.

It is to be understood that any suitable ltering material li', such as gauze, cotton, asbestos, briarwood cuttings or shavings, or the like, may be placed in the filtering chamber 1I surrounding 45 the tobacco bowl, but I preferably employ the natural product tobacco itself for this filter. This obviously retains the flavor of the smoke while ltering the nicotine therefrom. However, I do not wish to be restricted to any particular iilter- 50 ing material, numerous types of. which are known and usable. Preferably this iiltering material is flavored with honey or similar sweetening substance before it is introduced into the ltering chamber. 55

In the useof the pipe, tobacco is rst placed in theV tobacco bowl 3.V When it is lighted the smoke when drawn will pass downwardly throughrthe opening l5 into the cavity E, then upwardly Ythrough the numerous' passages 5, outwardly into outer wall of the bowl 3 and takes up the tobacco or filter flavor. A cool, dry and sweetly flavored smoke having the desired aroma is thus obtained, all particles or slugs being checked by the ltering material and the apertured flange extension 9.

It is further to be understood that the body and bowl of the pipe may be made of any suitable material, briar, meersohaum, ,phenolv condensation products, metal Vor the like, either in whole or in part. As showing a modification in this respect, reference will now be made to Figs. 6 and v7 where-` in the tobacco bowl is composed of the inner metal receptacle I8, having a sealing or gasket flange i9 about its top and. one ormore openings 20 at the bottom, and an outer receptacle 2| formed of corrugated metal to provide a series of passages 22 which correspond'to the passages 5 in the preferred form shown in Fig. 1;V The inner receptacle slides tightly into the outer, while lugs 23 stamped up from the bottom of the outer receptacle hold the receptacles spaced at the bottorn, and the outer protuberance 'la supports the holder at the baseas in the preferred'form.

In this construction, I preferably supply a metal ring 9a separate from the receptacles which ring is slipped into the body so as to rest at its bottom edge on the bottom of said body, the top edge snugly receiving the wall of the outer receptacle 2l, as shown in Fig. 7. This ring supports the filter material in the chamber 4 and has perforations lll therethrough to permit smoke to pass into the stem. Y

As shown in Fig.,7 also, a filter 'lla of gauze or other material is disposed in the stern passage Il and I desire it to be understood that both filters referred to'may be used or one of the same may be dispensed with, as desired.

A The top of the outerreceptacle terminates short ofthe top ofthe inner and therefore smoke may pass from the passages 22 into the filtering chamber surrounding the bowl. A better transfer of heat is obtained by such a construction while a1"- fording the same tortuous passage for the smoke through the pipe'.

' While the specific details of construction have been herein shown and described, the invention Yis not confined thereto as alterations may be made without departing from the spirit thereof l. A tobacco pipe of the class described conii prising a hollow body of conventional form .and having openings` in the base thereof to communicate with the' stem passage, a tobacco bowl arranged in said body composed of an inner tobacco holding receptacle and an outer metallic container having its vertical walls bent to form corrugatons extending in a Vertical direction parallel tothe axis of the bowl to provide a plum.

rality of smoke passages and its bottom formed with upwardly extending protuberances to support the lower end of the inner` receptacle, said bowllbeing sustained in spaced relation to the inner wall of the body, and a closure cap for 15 holding the bowl in said body and closing the top of the annular space about the bowl, whereby Y the smoke is caused to follow a tortuous passageV vdirection parallel to the axis of the bowl to provide a pluralityV of smoke passages, one of said Vlast mentioned members having its bottom?- formed with protuberances to sustain the tobacco holding receptacle in spaced relation Atothe metallic container at the bottom, said bowl being sustained in spaced relation Vto` the inner wall of the body Vto form an annular chamber, wherebyrf the smoke is caused to follow a tortuous passage downwardly of the inside Vof the bowl, upwardly at the outside of the tobacco holding receptacle and downwardly of the annular chamber, out a ring member surounding the bowl at the base of the annular chamber, and a closure cap for holding the bowl in said body and closing thetop of the annular chamber.

3. A tobacco holding unit for smoking pipes comprising an inner metallic receptacle' adapted to receive and hold the tobacco, said receptacle having openings in the base thereof, and an outer metallic receptacle having its vertical walls formed with corrugations extending in a vertical direction parallel to the axis of the unit, said corrugations forming a plurality of smoke passages,V

said outer receptacle having'upwardly extending; Y'

protuberances for sustaining the inner receptacle in spaced relation to the outer receptacle at'thev55 bottom, .and said outer` receptacle having a pro-iii" jection extending outwardly for supporting rthe unit in spaced relation tothe bottom of the smok-V ing pipe, and an annular ring member extending c about the bottom of the unit forcentralizing theno unit with respect to the smoking pipe.

CHARLES E. MCDONALD. 

